[urcu.git] / tests / benchmark / test_rwlock.c

/*
 * test_urcu.c
 *
 * Userspace RCU library - test program
 *
 * Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>

#include <urcu/arch.h>
#include <urcu/tls-compat.h>
#include "cpuset.h"
#include "thread-id.h"

/* hardcoded number of CPUs */
#define NR_CPUS 16384

#ifndef DYNAMIC_LINK_TEST
#define _LGPL_SOURCE
#endif
#include <urcu.h>

struct test_array {
	int a;
};

/*
 * static rwlock initializer is broken on Cygwin. Use runtime
 * initialization.
 */
pthread_rwlock_t lock;

static volatile int test_go, test_stop;

static unsigned long wdelay;

static volatile struct test_array test_array = { 8 };

static unsigned long duration;

/* read-side C.S. duration, in loops */
static unsigned long rduration;

/* write-side C.S. duration, in loops */
static unsigned long wduration;

static inline void loop_sleep(unsigned long loops)
{
	while (loops-- != 0)
		caa_cpu_relax();
}

static int verbose_mode;

#define printf_verbose(fmt, args...)		\
	do {					\
		if (verbose_mode)		\
			printf(fmt, args);	\
	} while (0)

static unsigned int cpu_affinities[NR_CPUS];
static unsigned int next_aff = 0;
static int use_affinity = 0;

pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;

static void set_affinity(void)
{
#if HAVE_SCHED_SETAFFINITY
	cpu_set_t mask;
	int cpu, ret;
#endif /* HAVE_SCHED_SETAFFINITY */

	if (!use_affinity)
		return;

#if HAVE_SCHED_SETAFFINITY
	ret = pthread_mutex_lock(&affinity_mutex);
	if (ret) {
		perror("Error in pthread mutex lock");
		exit(-1);
	}
	cpu = cpu_affinities[next_aff++];
	ret = pthread_mutex_unlock(&affinity_mutex);
	if (ret) {
		perror("Error in pthread mutex unlock");
		exit(-1);
	}

	CPU_ZERO(&mask);
	CPU_SET(cpu, &mask);
#if SCHED_SETAFFINITY_ARGS == 2
	sched_setaffinity(0, &mask);
#else
	sched_setaffinity(0, sizeof(mask), &mask);
#endif
#endif /* HAVE_SCHED_SETAFFINITY */
}

/*
 * returns 0 if test should end.
 */
static int test_duration_write(void)
{
	return !test_stop;
}

static int test_duration_read(void)
{
	return !test_stop;
}

static DEFINE_URCU_TLS(unsigned long long, nr_writes);
static DEFINE_URCU_TLS(unsigned long long, nr_reads);

static unsigned int nr_readers;
static unsigned int nr_writers;

pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;

void rcu_copy_mutex_lock(void)
{
	int ret;
	ret = pthread_mutex_lock(&rcu_copy_mutex);
	if (ret) {
		perror("Error in pthread mutex lock");
		exit(-1);
	}
}

void rcu_copy_mutex_unlock(void)
{
	int ret;

	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	if (ret) {
		perror("Error in pthread mutex unlock");
		exit(-1);
	}
}

void *thr_reader(void *_count)
{
	unsigned long long *count = _count;

	printf_verbose("thread_begin %s, tid %lu\n",
			"reader", urcu_get_thread_id());

	set_affinity();

	while (!test_go)
	{
	}

	for (;;) {
		int a, ret;

		ret = pthread_rwlock_rdlock(&lock);
		if (ret) {
			fprintf(stderr, "reader pthread_rwlock_rdlock: %s\n", strerror(ret));
			abort();
		}

		a = test_array.a;
		assert(a == 8);
		if (caa_unlikely(rduration))
			loop_sleep(rduration);

		ret = pthread_rwlock_unlock(&lock);
		if (ret) {
			fprintf(stderr, "reader pthread_rwlock_unlock: %s\n", strerror(ret));
			abort();
		}

		URCU_TLS(nr_reads)++;
		if (caa_unlikely(!test_duration_read()))
			break;
	}

	*count = URCU_TLS(nr_reads);
	printf_verbose("thread_end %s, tid %lu\n",
			"reader", urcu_get_thread_id());
	return ((void*)1);

}

void *thr_writer(void *_count)
{
	unsigned long long *count = _count;

	printf_verbose("thread_begin %s, tid %lu\n",
			"writer", urcu_get_thread_id());

	set_affinity();

	while (!test_go)
	{
	}
	cmm_smp_mb();

	for (;;) {
		int ret;

		ret = pthread_rwlock_wrlock(&lock);
		if (ret) {
			fprintf(stderr, "writer pthread_rwlock_wrlock: %s\n", strerror(ret));
			abort();
		}

		test_array.a = 0;
		test_array.a = 8;
		if (caa_unlikely(wduration))
			loop_sleep(wduration);

		ret = pthread_rwlock_unlock(&lock);
		if (ret) {
			fprintf(stderr, "writer pthread_rwlock_unlock: %s\n", strerror(ret));
			abort();
		}

		URCU_TLS(nr_writes)++;
		if (caa_unlikely(!test_duration_write()))
			break;
		if (caa_unlikely(wdelay))
			loop_sleep(wdelay);
	}

	printf_verbose("thread_end %s, tid %lu\n",
			"writer", urcu_get_thread_id());
	*count = URCU_TLS(nr_writes);
	return ((void*)2);
}

void show_usage(int argc, char **argv)
{
	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
		argv[0]);
	printf("OPTIONS:\n");
	printf("	[-d delay] (writer period (us))\n");
	printf("	[-c duration] (reader C.S. duration (in loops))\n");
	printf("	[-e duration] (writer C.S. duration (in loops))\n");
	printf("	[-v] (verbose output)\n");
	printf("	[-a cpu#] [-a cpu#]... (affinity)\n");
	printf("\n");
}

int main(int argc, char **argv)
{
	int err;
	pthread_t *tid_reader, *tid_writer;
	void *tret;
	unsigned long long *count_reader, *count_writer;
	unsigned long long tot_reads = 0, tot_writes = 0;
	int i, a;

	if (argc < 4) {
		show_usage(argc, argv);
		return -1;
	}
	cmm_smp_mb();

	err = sscanf(argv[1], "%u", &nr_readers);
	if (err != 1) {
		show_usage(argc, argv);
		return -1;
	}

	err = sscanf(argv[2], "%u", &nr_writers);
	if (err != 1) {
		show_usage(argc, argv);
		return -1;
	}
	
	err = sscanf(argv[3], "%lu", &duration);
	if (err != 1) {
		show_usage(argc, argv);
		return -1;
	}

	for (i = 4; i < argc; i++) {
		if (argv[i][0] != '-')
			continue;
		switch (argv[i][1]) {
		case 'a':
			if (argc < i + 2) {
				show_usage(argc, argv);
				return -1;
			}
			a = atoi(argv[++i]);
			cpu_affinities[next_aff++] = a;
			use_affinity = 1;
			printf_verbose("Adding CPU %d affinity\n", a);
			break;
		case 'c':
			if (argc < i + 2) {
				show_usage(argc, argv);
				return -1;
			}
			rduration = atol(argv[++i]);
			break;
		case 'd':
			if (argc < i + 2) {
				show_usage(argc, argv);
				return -1;
			}
			wdelay = atol(argv[++i]);
			break;
		case 'e':
			if (argc < i + 2) {
				show_usage(argc, argv);
				return -1;
			}
			wduration = atol(argv[++i]);
			break;
		case 'v':
			verbose_mode = 1;
			break;
		}
	}

	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
		duration, nr_readers, nr_writers);
	printf_verbose("Writer delay : %lu loops.\n", wdelay);
	printf_verbose("Reader duration : %lu loops.\n", rduration);
	printf_verbose("thread %-6s, tid %lu\n",
			"main", urcu_get_thread_id());

	err = pthread_rwlock_init(&lock, NULL);
	if (err != 0) {
		fprintf(stderr, "pthread_rwlock_init: (%d) %s\n", err, strerror(err));
		exit(1);
	}

	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	count_reader = calloc(nr_readers, sizeof(*count_reader));
	count_writer = calloc(nr_writers, sizeof(*count_writer));

	next_aff = 0;

	for (i = 0; i < nr_readers; i++) {
		err = pthread_create(&tid_reader[i], NULL, thr_reader,
				     &count_reader[i]);
		if (err != 0)
			exit(1);
	}
	for (i = 0; i < nr_writers; i++) {
		err = pthread_create(&tid_writer[i], NULL, thr_writer,
				     &count_writer[i]);
		if (err != 0)
			exit(1);
	}

	cmm_smp_mb();

	test_go = 1;

	sleep(duration);

	test_stop = 1;

	for (i = 0; i < nr_readers; i++) {
		err = pthread_join(tid_reader[i], &tret);
		if (err != 0)
			exit(1);
		tot_reads += count_reader[i];
	}
	for (i = 0; i < nr_writers; i++) {
		err = pthread_join(tid_writer[i], &tret);
		if (err != 0)
			exit(1);
		tot_writes += count_writer[i];
	}

	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
	       tot_writes);
	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
		"nr_writers %3u "
		"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
		argv[0], duration, nr_readers, rduration, wduration,
		nr_writers, wdelay, tot_reads, tot_writes,
		tot_reads + tot_writes);

	err = pthread_rwlock_destroy(&lock);
	if (err != 0) {
		fprintf(stderr, "pthread_rwlock_destroy: (%d) %s\n", err, strerror(err));
		exit(1);
	}
	free(tid_reader);
	free(tid_writer);
	free(count_reader);
	free(count_writer);
	return 0;
}
Commit	Line	Data
10c48e14 MD	1	/*
	2	* test_urcu.c
	3	*
	4	* Userspace RCU library - test program
	5	*
6982d6d7	6	* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
10c48e14 MD	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License along
	19	* with this program; if not, write to the Free Software Foundation, Inc.,
	20	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	21	*/
	22
	23	#include <stdio.h>
	24	#include <pthread.h>
	25	#include <stdlib.h>
	26	#include <string.h>
	27	#include <sys/types.h>
	28	#include <sys/wait.h>
	29	#include <unistd.h>
	30	#include <stdio.h>
	31	#include <assert.h>
94b343fd	32	#include <errno.h>
10c48e14	33
ec4e58a3	34	#include <urcu/arch.h>
bd252a04	35	#include <urcu/tls-compat.h>
2953b501	36	#include "cpuset.h"
94df6318	37	#include "thread-id.h"
65fcc7e9	38
2a7ac59d MD	39	/* hardcoded number of CPUs */
	40	#define NR_CPUS 16384
	41
10c48e14 MD	42	#ifndef DYNAMIC_LINK_TEST
10c48e14 MD	43	#define _LGPL_SOURCE
10c48e14	44	#endif
ec4e58a3	45	#include <urcu.h>
10c48e14 MD	46
	47	struct test_array {
	48	int a;
	49	};
	50
89a6a9ce MJ	51	/*
	52	* static rwlock initializer is broken on Cygwin. Use runtime
	53	* initialization.
	54	*/
	55	pthread_rwlock_t lock;
10c48e14	56
78efb485	57	static volatile int test_go, test_stop;
10c48e14	58
9e31d0f0	59	static unsigned long wdelay;
10c48e14	60
2b4e4125	61	static volatile struct test_array test_array = { 8 };
10c48e14 MD	62
10c48e14 MD	63	static unsigned long duration;
10c48e14	64
daddf5b0	65	/* read-side C.S. duration, in loops */
8b632bab MD	66	static unsigned long rduration;
8b632bab MD	67
31b598e0 MD	68	/* write-side C.S. duration, in loops */
	69	static unsigned long wduration;
	70
ab0aacbe	71	static inline void loop_sleep(unsigned long loops)
daddf5b0	72	{
ab0aacbe	73	while (loops-- != 0)
06f22bdb	74	caa_cpu_relax();
daddf5b0 MD	75	}
daddf5b0 MD	76
4bad7d45 MD	77	static int verbose_mode;
	78
	79	#define printf_verbose(fmt, args...) \
	80	do { \
	81	if (verbose_mode) \
	82	printf(fmt, args); \
	83	} while (0)
	84
2a7ac59d MD	85	static unsigned int cpu_affinities[NR_CPUS];
	86	static unsigned int next_aff = 0;
	87	static int use_affinity = 0;
	88
6af882ba MD	89	pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
6af882ba MD	90
2a7ac59d MD	91	static void set_affinity(void)
2a7ac59d MD	92	{
95bc7fb9	93	#if HAVE_SCHED_SETAFFINITY
2a7ac59d	94	cpu_set_t mask;
95bc7fb9 MD	95	int cpu, ret;
95bc7fb9 MD	96	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	97
	98	if (!use_affinity)
	99	return;
	100
d8540fc5	101	#if HAVE_SCHED_SETAFFINITY
6af882ba MD	102	ret = pthread_mutex_lock(&affinity_mutex);
	103	if (ret) {
	104	perror("Error in pthread mutex lock");
	105	exit(-1);
	106	}
2a7ac59d	107	cpu = cpu_affinities[next_aff++];
6af882ba MD	108	ret = pthread_mutex_unlock(&affinity_mutex);
	109	if (ret) {
	110	perror("Error in pthread mutex unlock");
	111	exit(-1);
	112	}
d8540fc5	113
2a7ac59d MD	114	CPU_ZERO(&mask);
2a7ac59d MD	115	CPU_SET(cpu, &mask);
d8540fc5 PA	116	#if SCHED_SETAFFINITY_ARGS == 2
	117	sched_setaffinity(0, &mask);
	118	#else
2a7ac59d	119	sched_setaffinity(0, sizeof(mask), &mask);
d8540fc5 PA	120	#endif
d8540fc5 PA	121	#endif /* HAVE_SCHED_SETAFFINITY */
2a7ac59d MD	122	}
2a7ac59d MD	123
10c48e14 MD	124	/*
	125	* returns 0 if test should end.
	126	*/
	127	static int test_duration_write(void)
	128	{
78efb485	129	return !test_stop;
10c48e14 MD	130	}
	131
	132	static int test_duration_read(void)
	133	{
78efb485	134	return !test_stop;
10c48e14 MD	135	}
10c48e14 MD	136
bd252a04 MD	137	static DEFINE_URCU_TLS(unsigned long long, nr_writes);
bd252a04 MD	138	static DEFINE_URCU_TLS(unsigned long long, nr_reads);
10c48e14 MD	139
	140	static unsigned int nr_readers;
	141	static unsigned int nr_writers;
	142
	143	pthread_mutex_t rcu_copy_mutex = PTHREAD_MUTEX_INITIALIZER;
	144
	145	void rcu_copy_mutex_lock(void)
	146	{
	147	int ret;
	148	ret = pthread_mutex_lock(&rcu_copy_mutex);
	149	if (ret) {
	150	perror("Error in pthread mutex lock");
	151	exit(-1);
	152	}
	153	}
	154
	155	void rcu_copy_mutex_unlock(void)
	156	{
	157	int ret;
	158
	159	ret = pthread_mutex_unlock(&rcu_copy_mutex);
	160	if (ret) {
	161	perror("Error in pthread mutex unlock");
	162	exit(-1);
	163	}
	164	}
	165
	166	void thr_reader(void _count)
	167	{
	168	unsigned long long *count = _count;
	169
94df6318 MD	170	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	171	"reader", urcu_get_thread_id());
10c48e14	172
2a7ac59d MD	173	set_affinity();
2a7ac59d MD	174
10c48e14 MD	175	while (!test_go)
	176	{
	177	}
	178
	179	for (;;) {
89a6a9ce MJ	180	int a, ret;
	181
	182	ret = pthread_rwlock_rdlock(&lock);
	183	if (ret) {
	184	fprintf(stderr, "reader pthread_rwlock_rdlock: %s\n", strerror(ret));
	185	abort();
	186	}
efa8d2c8	187
efa8d2c8 MD	188	a = test_array.a;
efa8d2c8 MD	189	assert(a == 8);
a0b7f7ea	190	if (caa_unlikely(rduration))
daddf5b0	191	loop_sleep(rduration);
89a6a9ce MJ	192
	193	ret = pthread_rwlock_unlock(&lock);
	194	if (ret) {
	195	fprintf(stderr, "reader pthread_rwlock_unlock: %s\n", strerror(ret));
	196	abort();
	197	}
	198
bd252a04	199	URCU_TLS(nr_reads)++;
a0b7f7ea	200	if (caa_unlikely(!test_duration_read()))
10c48e14 MD	201	break;
	202	}
	203
bd252a04	204	*count = URCU_TLS(nr_reads);
94df6318 MD	205	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	206	"reader", urcu_get_thread_id());
10c48e14 MD	207	return ((void*)1);
	208
	209	}
	210
	211	void thr_writer(void _count)
	212	{
	213	unsigned long long *count = _count;
	214
94df6318 MD	215	printf_verbose("thread_begin %s, tid %lu\n",
94df6318 MD	216	"writer", urcu_get_thread_id());
10c48e14	217
2a7ac59d MD	218	set_affinity();
2a7ac59d MD	219
10c48e14 MD	220	while (!test_go)
	221	{
	222	}
5481ddb3	223	cmm_smp_mb();
10c48e14 MD	224
10c48e14 MD	225	for (;;) {
89a6a9ce MJ	226	int ret;
	227
	228	ret = pthread_rwlock_wrlock(&lock);
	229	if (ret) {
	230	fprintf(stderr, "writer pthread_rwlock_wrlock: %s\n", strerror(ret));
	231	abort();
	232	}
	233
2b4e4125	234	test_array.a = 0;
10c48e14	235	test_array.a = 8;
a0b7f7ea	236	if (caa_unlikely(wduration))
31b598e0	237	loop_sleep(wduration);
89a6a9ce MJ	238
	239	ret = pthread_rwlock_unlock(&lock);
	240	if (ret) {
	241	fprintf(stderr, "writer pthread_rwlock_unlock: %s\n", strerror(ret));
	242	abort();
	243	}
	244
bd252a04	245	URCU_TLS(nr_writes)++;
a0b7f7ea	246	if (caa_unlikely(!test_duration_write()))
10c48e14	247	break;
a0b7f7ea	248	if (caa_unlikely(wdelay))
9e31d0f0	249	loop_sleep(wdelay);
10c48e14 MD	250	}
10c48e14 MD	251
94df6318 MD	252	printf_verbose("thread_end %s, tid %lu\n",
94df6318 MD	253	"writer", urcu_get_thread_id());
bd252a04	254	*count = URCU_TLS(nr_writes);
10c48e14 MD	255	return ((void*)2);
	256	}
	257
	258	void show_usage(int argc, char **argv)
	259	{
06637138 MD	260	printf("Usage : %s nr_readers nr_writers duration (s) <OPTIONS>\n",
	261	argv[0]);
	262	printf("OPTIONS:\n");
06637138 MD	263	printf(" [-d delay] (writer period (us))\n");
	264	printf(" [-c duration] (reader C.S. duration (in loops))\n");
	265	printf(" [-e duration] (writer C.S. duration (in loops))\n");
	266	printf(" [-v] (verbose output)\n");
	267	printf(" [-a cpu#] [-a cpu#]... (affinity)\n");
10c48e14 MD	268	printf("\n");
	269	}
	270
	271	int main(int argc, char **argv)
	272	{
	273	int err;
	274	pthread_t tid_reader, tid_writer;
	275	void *tret;
	276	unsigned long long count_reader, count_writer;
	277	unsigned long long tot_reads = 0, tot_writes = 0;
9e97e478	278	int i, a;
10c48e14 MD	279
	280	if (argc < 4) {
	281	show_usage(argc, argv);
	282	return -1;
	283	}
5481ddb3	284	cmm_smp_mb();
10c48e14 MD	285
	286	err = sscanf(argv[1], "%u", &nr_readers);
	287	if (err != 1) {
	288	show_usage(argc, argv);
	289	return -1;
	290	}
	291
	292	err = sscanf(argv[2], "%u", &nr_writers);
	293	if (err != 1) {
	294	show_usage(argc, argv);
	295	return -1;
	296	}
	297
	298	err = sscanf(argv[3], "%lu", &duration);
	299	if (err != 1) {
	300	show_usage(argc, argv);
	301	return -1;
	302	}
	303
	304	for (i = 4; i < argc; i++) {
	305	if (argv[i][0] != '-')
	306	continue;
	307	switch (argv[i][1]) {
9e97e478 MD	308	case 'a':
	309	if (argc < i + 2) {
	310	show_usage(argc, argv);
	311	return -1;
	312	}
	313	a = atoi(argv[++i]);
2a7ac59d	314	cpu_affinities[next_aff++] = a;
9e97e478	315	use_affinity = 1;
4bad7d45	316	printf_verbose("Adding CPU %d affinity\n", a);
9e97e478	317	break;
8b632bab MD	318	case 'c':
	319	if (argc < i + 2) {
	320	show_usage(argc, argv);
	321	return -1;
	322	}
9e31d0f0	323	rduration = atol(argv[++i]);
8b632bab	324	break;
10c48e14 MD	325	case 'd':
	326	if (argc < i + 2) {
	327	show_usage(argc, argv);
	328	return -1;
	329	}
9e31d0f0	330	wdelay = atol(argv[++i]);
10c48e14	331	break;
31b598e0 MD	332	case 'e':
	333	if (argc < i + 2) {
	334	show_usage(argc, argv);
	335	return -1;
	336	}
	337	wduration = atol(argv[++i]);
	338	break;
4bad7d45 MD	339	case 'v':
	340	verbose_mode = 1;
	341	break;
10c48e14 MD	342	}
	343	}
	344
4bad7d45	345	printf_verbose("running test for %lu seconds, %u readers, %u writers.\n",
10c48e14	346	duration, nr_readers, nr_writers);
9e31d0f0	347	printf_verbose("Writer delay : %lu loops.\n", wdelay);
4bad7d45	348	printf_verbose("Reader duration : %lu loops.\n", rduration);
94df6318 MD	349	printf_verbose("thread %-6s, tid %lu\n",
94df6318 MD	350	"main", urcu_get_thread_id());
10c48e14	351
89a6a9ce MJ	352	err = pthread_rwlock_init(&lock, NULL);
	353	if (err != 0) {
	354	fprintf(stderr, "pthread_rwlock_init: (%d) %s\n", err, strerror(err));
	355	exit(1);
	356	}
	357
9aa14175 MD	358	tid_reader = calloc(nr_readers, sizeof(*tid_reader));
	359	tid_writer = calloc(nr_writers, sizeof(*tid_writer));
	360	count_reader = calloc(nr_readers, sizeof(*count_reader));
	361	count_writer = calloc(nr_writers, sizeof(*count_writer));
10c48e14	362
2a7ac59d MD	363	next_aff = 0;
2a7ac59d MD	364
10c48e14 MD	365	for (i = 0; i < nr_readers; i++) {
	366	err = pthread_create(&tid_reader[i], NULL, thr_reader,
	367	&count_reader[i]);
	368	if (err != 0)
	369	exit(1);
	370	}
	371	for (i = 0; i < nr_writers; i++) {
	372	err = pthread_create(&tid_writer[i], NULL, thr_writer,
	373	&count_writer[i]);
	374	if (err != 0)
	375	exit(1);
	376	}
	377
5481ddb3	378	cmm_smp_mb();
10c48e14	379
78efb485 MD	380	test_go = 1;
	381
	382	sleep(duration);
	383
	384	test_stop = 1;
	385
10c48e14 MD	386	for (i = 0; i < nr_readers; i++) {
	387	err = pthread_join(tid_reader[i], &tret);
	388	if (err != 0)
	389	exit(1);
	390	tot_reads += count_reader[i];
	391	}
	392	for (i = 0; i < nr_writers; i++) {
	393	err = pthread_join(tid_writer[i], &tret);
	394	if (err != 0)
	395	exit(1);
	396	tot_writes += count_writer[i];
	397	}
4bad7d45 MD	398
4bad7d45 MD	399	printf_verbose("total number of reads : %llu, writes %llu\n", tot_reads,
10c48e14	400	tot_writes);
a50a7b43	401	printf("SUMMARY %-25s testdur %4lu nr_readers %3u rdur %6lu wdur %6lu "
cda3c71d	402	"nr_writers %3u "
9e31d0f0	403	"wdelay %6lu nr_reads %12llu nr_writes %12llu nr_ops %12llu\n",
a50a7b43	404	argv[0], duration, nr_readers, rduration, wduration,
4bad7d45 MD	405	nr_writers, wdelay, tot_reads, tot_writes,
	406	tot_reads + tot_writes);
	407
89a6a9ce MJ	408	err = pthread_rwlock_destroy(&lock);
	409	if (err != 0) {
	410	fprintf(stderr, "pthread_rwlock_destroy: (%d) %s\n", err, strerror(err));
	411	exit(1);
	412	}
10c48e14 MD	413	free(tid_reader);
	414	free(tid_writer);
	415	free(count_reader);
	416	free(count_writer);
	417	return 0;
	418	}